Correct answer: A. Distrust of British rule and spirit of non-cooperation
Explanation: Direct answer: Option A is correct. The Jallianwala Bagh massacre took place at Amritsar on 13 April 1919, when General Dyer's troops fired on a largely unarmed gathering. The event showed many Indians that the colonial government could use extreme violence against its own subjects. As a result, trust in British justice and constitutional promises declined sharply. The national movement moved more strongly toward resistance, boycott, and non-cooperation. Option A accurately combines both major effects: distrust of British rule and a stronger spirit of non-cooperation. Option B is wrong because the massacre reduced, rather than increased, faith in British rule. Option C is wrong because East India Company rule had ended in 1858; it did not return after this event. Option D is wrong because Permanent Settlement was an eighteenth-century revenue arrangement, not the main change in the national movement after 1919. The date 1919 is important because it became a turning point before Gandhi's Non-Cooperation Movement. Memory cue: Jallianwala Bagh exposed colonial brutality and pushed people away from cooperation with British rule.